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Water treatment & purification system installers and replacers in South Dennis

Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
30 Waverly St
4.68(
155
)
Approved Pro
Cotti-Johnson Heating-Cooling-Electrical
30 Waverly St
4.68(
155
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
3107 local quotes requested

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025


Petro Home Services
84 Newbury St
4.17(
141
)
Petro Home Services
84 Newbury St
4.17(
141
)
Customers say: Super punctual
122 years of experience

We're America’s #1 local home heating oil and total home comfort services provider (heating, cooling, plumbing, & chimney). With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Our heater stopped functioning on Nov 27, 2023 and we called Petro who had done the maintenance on it before and replaced a motor two years ago. They were responsive and a technician came two days later. He worked for 3 hours without explaining what the problem was. Then said he needed to replace the motor. He fixed the problem and left without much explanation. Two days later a bill of $2500 came via email. No explanation, no break-down. I called 4 times over the last 20 days, spoke to 4 different reps and was promised that a supervisor will contact me with the bill details. Nothing happened. Irresponsible customer service and unprofessional behavior. They show all the symptoms of big, bureaucratic, and indifferent service company. I would not recommend Petro if you have options of more personalized services."

Nasser R on December 2023

We're America’s #1 local home heating oil and total home comfort services provider (heating, cooling, plumbing, & chimney). With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Our heater stopped functioning on Nov 27, 2023 and we called Petro who had done the maintenance on it before and replaced a motor two years ago. They were responsive and a technician came two days later. He worked for 3 hours without explaining what the problem was. Then said he needed to replace the motor. He fixed the problem and left without much explanation. Two days later a bill of $2500 came via email. No explanation, no break-down. I called 4 times over the last 20 days, spoke to 4 different reps and was promised that a supervisor will contact me with the bill details. Nothing happened. Irresponsible customer service and unprofessional behavior. They show all the symptoms of big, bureaucratic, and indifferent service company. I would not recommend Petro if you have options of more personalized services."

Nasser R on December 2023


Moses Plumbing & Heating Services LLC
301 Buck Island Rd
5.00(
5
)
Moses Plumbing & Heating Services LLC
301 Buck Island Rd
5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We have the experience and dedication to get the job done right! Specializing in Plumbing and Heating services, we guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule an estimate today!

"Excellent."

Brian R on April 2022

We have the experience and dedication to get the job done right! Specializing in Plumbing and Heating services, we guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule an estimate today!

"Excellent."

Brian R on April 2022


Weed & Feed Inc. dba DHT Golf Services
8 Meadow Park Rd.
No reviews
Weed & Feed Inc. dba DHT Golf Services
8 Meadow Park Rd.
No reviews
38 years of experience

In 1987, Dahn Tibbett formed Weed & Feed Inc d/b/a DHT Golf. Our company is located on 8 Meadow Park Road, Plymouth ,MA. Our roots are in the golf course business, a business known for precise landscaping construction. We know how to grow grass, build landscapes and install efficient irrigation systems. Want to build a maze, or dredge a pond, or build a baseball field? We've done that, too.

In 1987, Dahn Tibbett formed Weed & Feed Inc d/b/a DHT Golf. Our company is located on 8 Meadow Park Road, Plymouth ,MA. Our roots are in the golf course business, a business known for precise landscaping construction. We know how to grow grass, build landscapes and install efficient irrigation systems. Want to build a maze, or dredge a pond, or build a baseball field? We've done that, too.


A Master's Plumbing Heating HVAC
10 Orchard Way
5.00(
1
)
A Master's Plumbing Heating HVAC
10 Orchard Way
5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

A Master's serves the needs of it's clients by providing professionally trained personnel and utilizing the latest in time-saving equipment to solve the most challenging job. We have the best safety record in the industry. All of our mechanics and operators comply with the most strindgent standards as outlined in Plumbing & Fuel Gas code. All work is accomplished in a good workman-like manner. Respect to the desires of the client is foremost, right up there with safety.

"He took care of everything for me, he was amazing, his price is very fair and he offered 24hr emergency service."

Jason M on December 2020

A Master's serves the needs of it's clients by providing professionally trained personnel and utilizing the latest in time-saving equipment to solve the most challenging job. We have the best safety record in the industry. All of our mechanics and operators comply with the most strindgent standards as outlined in Plumbing & Fuel Gas code. All work is accomplished in a good workman-like manner. Respect to the desires of the client is foremost, right up there with safety.

"He took care of everything for me, he was amazing, his price is very fair and he offered 24hr emergency service."

Jason M on December 2020


Ideal Water of Cape Cod, LLC
64 Irving Rd
No reviews
Ideal Water of Cape Cod, LLC
64 Irving Rd
No reviews
18 years of experience

Our most important need for our existence is water. But most water is full of chlorine and other unwanted elements and chemicals. We have the means to make your water clean, safe & IDEAL for cooking and drinking.

Our most important need for our existence is water. But most water is full of chlorine and other unwanted elements and chemicals. We have the means to make your water clean, safe & IDEAL for cooking and drinking.


Environmental Testing & Research Laboratories, Inc
60 Elm Hill Ave.
4.85(
337
)
Environmental Testing & Research Laboratories, Inc
60 Elm Hill Ave.
4.85(
337
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018


SARIAN CO INC
8 JAN SEBASTIAN DR
No reviews
SARIAN CO INC
8 JAN SEBASTIAN DR
No reviews

MP Property Maintenance
26 Wooncepit Rd
5.00(
13
)
MP Property Maintenance
26 Wooncepit Rd
5.00(
13
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With over 30yrs of experience in the facilities maintenance field, we are able to provide most of your residential and commercial building maintenance needs. Rental properties, Condos, Residential. Please visit our website for a full description of services

With over 30yrs of experience in the facilities maintenance field, we are able to provide most of your residential and commercial building maintenance needs. Rental properties, Condos, Residential. Please visit our website for a full description of services


Aquathin Greater Boston
8 Reo Rd
No reviews
Aquathin Greater Boston
8 Reo Rd
No reviews
45 years of experience

Water Purification Systems. Sales, service, and maintenance.

Water Purification Systems. Sales, service, and maintenance.

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FAQs for water treatment & purification system installation and replacement projects in South Dennis, MA

Water softeners consist of three main components: a mineral tank, a brine tank, and a control valve. In some smaller units, the mineral tank and brine tank are combined into one cabinet.

Professionals install whole-home systems at the point of entry of the main water line. Smaller units are installed under sinks or near a washer—these units only soften the water for that fixture, not the entire home.

  • Mineral Tank: Hard water passes into the mineral tank through resin beads, and an ion exchange occurs. Magnesium and calcium ions are exchanged for sodium or potassium ions from the brine tank.

  • Brine Tank: The brine tank contains sodium or potassium to recharge the resin.

  • Control Valve: The control valve determines when to clean the resin beads.

Choosing between a salt-based or potassium-based water softener depends on your priorities. Salt-based systems effectively remove hard-water minerals, regenerate efficiently, and are cost-effective. However, they may not be ideal for individuals on low-sodium diets. Potassium-based systems neutralize minerals without removing them and regenerate more frequently. They are more expensive but offer a healthier and more environmentally friendly option. If sodium levels are a concern and cost isn't a major factor, a potassium system may be the better choice.

To calculate your water softener's capacity, determine your grains per gallon (GPG) number by:

  • Multiplying the number of people in your home by 90. The average number of gallons used per person for washing, drinking, and cooking ranges from 80 to 100 gallons per day.

  • Multiplying that result by the hardness of your water. The average grains per gallon in the United States is 10 but can range from 0 to 17. You can find your GPG number by purchasing an at-home water testing kit.

Installing a water softener takes between two to four hours on average. The exact duration depends on the complexity of the unit and whether additional plumbing or electrical work is required. If modifications to existing pipes are necessary, installation may take longer. Preparing the installation area by clearing any obstructions can help streamline the process.

Water softeners can last up to 25 years with proper maintenance and care. The lifespan depends on the type and quality of the unit you choose. Single-tank electric water softeners may last around 12 years, while higher-quality models tend to last longer. Regular maintenance, such as routine inspections and timely replacement of salts or potassium, helps extend the life of your system. Most water softeners require minimal repairs over their lifespan.

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